Controlling-switch.



PATENTED JULY 2s, 19o. H. E. WHITE. GUNTROLLING SWITGH.

APPLIOATIQN IILBD. KAY 12, 1904.

MHH MHHHHUNHHJ@ WF m v E,

invento? control-switch; but it results .in s

i eccordrn .constriicted heretofore by milking the speed cor Such elswitch simplifies the 1 nAnoLn- E. WHITE,

COMANY, A CORPORATION 0F ,NEW

CONTRQLLNG-SWITCH.

Application :filed Mey 12,

Specification of Letters Patent.'

resented Jury 2s, reo?. 1904. .semi No. sensei.

To all whom it 'may concern.:

Be it known that I, HAROLD E; Wm'rn, e citizen ot the United States,residing et Schenectady, countyol Schenectady, State of New York,` haveinvented cer-- tain new and useful Improvements in Controlling Switches,ofwhich the following is e specicstion. ,A

My invention relates to controlling switches for electric motors, andits object is to provide e. controlling switch with :i minimum number oicontacts adapted for controlling the motor speed and reversing thedirection of rotation.

It has been common practice heretofore, when it has been desired tocontrol the speed of a. motor in either direction, to provide one switchfor speed control and a second switch for reversing the motor or motors.It'

is frequently advantageous te combine both functions in s, singleswitch, the control is thereby simplified. Switches for combining bothluncons hete been rolling Witch rotatable in eimer direction from tlieolf posi-- tion and employing two sets of movable contacts, one on eachside of the oft' position; each s' l ing the equivolent oi the contactsordinarily enrol controlling switch not lowing the l by cnobl 15;' toperator to stort and control tno nlctor in either i tion7 according tothe direction ol' Jnovoniont ot o single e and costly switch, since withthis orinngcnxcnt thi. innnbcr oi' tsets ot the ordinary controiliniYcli7 without the lly doubled= only versing function, must be practice.

one heli the total number o1 mumble lr csiut contebeing utilized loroperation in either By n1 v invention l so h. that without ir l ion.

1 mir/.e s. controllin s tents by onore t obtain s f i one or two l nier1t t und spoed control in either dirmlon, to the movement ol' the plishthis by providinff two or more contacts disposed 180 grecs sport lor twol smaller angle for n. greater number oi sets, noch sct bcing arrangedto be engaged by the movable contacts when the controlling switch ismoved in either direction. In this nisnncr l utilize all or ncrrrly allol both stationery end rnovsble'contocts lor bo'li directions ofrotation, and thereby obtain the reversing function Without incr-cose olthe controller contacts.

My invrtion will best 11nd/ ,ood by reference to 'the accompanyingdrawing, in wllicli l bzrve shown diz 'raininntiful v t controllingswitch arr Aged .in sc oordence h r ,y invention end adapted to thecontrol Vof o. single series motor. It will be und however, th-it myinvention 'is not limited to th' tl) y eny controlling switch by moansof which it is desired to obtain both reversal and speed control.

ln. the drawing, A represents the armature, and F the 'controllingswitch C to the line terminals T T.

circuit for the purpose of obtaining variable speed.

I have shown the contacts 0f controlling switch C developed on al plonesurface. i

It Will be understood thatthe physical construction Aand arrangement olthis switch may be of any well nary rotary drum type" or controller'.The movable contacts consist oi three groups. The first group comprisestwenty-one contacts electrically connected, which ere indicated by thereiorence characters c to om. The second group consists of two contacts,c2 and 622. The third. group consists of two contacts o23 and I haveshown twenty-eight stationary contacts arranged in two groups-olfourteen each, those groups other words, dinnretrico the rotary memberwhich carries the movable contacts. l have :ipplicd rcierence charactersto the stationary contacts indicating their electrical connections.Thus, stationary contacts t :und t? are connected to line terminal T.{font-ect t is connected to line terminal T1. Contacts a and a :ireconnected to one terminal `o1" im nrsturc s.. Con "fiets a2 and o3 areconnected to the other er nrtnrc tmn'iirra Contact f is connected to one.Geld terminal. Co' cts r1 to rjo aire connected to points on thevsriihle resist-once R.

The operation is ns follows: lf thc movable conte-.cls ol controllingswitch C are moved to thc lelt by the ro tation ol' tho controller drumto bring the stationery contacts into. engagement with the movableconliicts on position l, ns indicated by thc dotted lines, l l, scircuit will be closed follows: lroin line termi rml l to contact t,contact c, Contact o1, contact 1, resis-tence ll., vtlcld if, cont-uctf, Contact ci, contact c, contact nl, armature A, Contact a, Contact c,Contact c, contact t1, lino tcrrninol Tf. The motor is consequentlyconnected to the line with the total resists-nce R in series. l\`ow itthe. switch is moved to position 2, ns indicated by the dotted lines,stationary Contact r2 is engaged by nrovzrblc Contact c2 and one sectionof resistance l?. cnt out ol circuit. ln position 3, station- :nyContact 'r3 is engaged by movable Contact c3, and the second section oiresistance lt is cut out ol circuit. As the movi'. lc contacts nro movedstill further to 'the left, contee c, c5, etc., are scri-elly andslterrn` l sneed bv the two sets oi stationary contacts and further R isa resistenceedapted for insertion in the motorY being displaced fromescl other by i8() degrees or, in

ll f opposite with reference to ticnla-r application, 1out may be usedto advantage on iield of s series motor, which is connected through theknown forni of rotary switch, as for instance the orditoets townid theCit ' tion ore thus oir Conidi-ts of controller t) to- Y s turned to itsoi' iiie'ifed to the righ l' to position 2G ny the r( tion oi theeen-frotter drinn :i eil enitl closed ris t'oiiows: line llerniniili T,i2, c, it, d F, f7 #22, e, al, armature ii a e nl T. The, motor 's thusagain connect-ed to i, iin'y circuit, *ont with the Conner versed. Themotor sensed jrfnliy wi'i start in the opoosite direction.

As the n )tion of' the uioviiiiiie oon- Vo position liti,niovlrngenieni; with stritioiiiiry Contact 1', and ont tion of r cuioutoi circuit. This is continued in the sev riii positions until whenposition l is reached the motor is ngiiin Connected directly to line.

Thus it; Will be seen that by ni oi my invention I ein enabled 'toproduce ich i Ning 'oniy runnyiive niovzihie Cont-acts :ind iidiipted toIgive twenty different motor spectra in either direction.

AS hns been sind heretofore, n'iy invention is notI innited to theControi of ai. singie motor, nor to simple rhoecontrohbntisapplicabletounyweii gnown typeot in which it is desired to iielude the reversingliunction. Iinrtheiniord, iis has been sind heretofore, more than twosots oi' fontftets may ifo employed, as in ins-linie@ these (ispia-:edby i2@ degreeis or tour sets displaced hy l0 l" oi' the arrangementsmaken it possible to use nil the cont'fiels ior holzh direitions oimovement oi the inviten. ao while i d0- si diie that' the :ing-giebetween tinA frets siionid be i8() or l2@ degrees, :is the ezine indyhe, in order to serine :i nmetriciii zo rangement er the n'ioviihiecontacts, it is 'ourse possible to depart ,from th' symmetric-iiitoezitioii oi the sets hy :i distortion of 1hr; inovn hie eontfiets. iiieeoidingiy nini in the appendediliiinis to cover :iii suchinodiiiezitions which nre within 'il l spii oi' my invention,

ohio Contact am iii-ought into f? it inid scope Whitt Claim new anddesire io secure hy Leiters ed lio he connected cont rolling' swii fromits on' positioi plzieeli h1.' snlislzinli' l tnx-ts oi' eut-h setheine' fondi-eten lo lion [o snid resistzinei'-, :ind

:i portion oi' the con 'd motor :intl :i porlllell: mevzilile relntivelylo saliti sels` :i portion ol' d o eontnets heim: :ii-"finned to lieennui-,ed seriiillv :ind niternntely h v [he portions of sziid two setseonneeted to suid resistance when suid switeh is moved in eithe direct.n from its on' position,

2, ln'eoinhinzitih with :i re stnnee. :i rotin-y eontrotling' switeh:idnpted io lie moved in either direction from its ott' position :indlnivin-r; two sets ot eontiiels displneed liv soir :inlizillv 'iHHdezrrees, the i-onlnets ot eut-h sel heilig: ronneetlnl to nltlrnzi'tepoints on -sziid rr istnnee. :and con tirets nroviilile rehitively lodirect ion trom oil' its l). ln cooihimition with :i

ich :iddpted lo he mor i 'ion :ind ln' nel. inoYnUii; i;

to enflnfg'e snreessively :ill oi' snid st'ntionnrv eontzietsl eonneeiedto said resistnnee when snid svviteh is moved in either direetion fromitsl otl' po. "tion,

4. in eolnhimition, :in eleetrie niolon :i rests-trineo :idaipl- "ed lohe eonneeted in eiriiilt with sziid motor, :i rotury eontrollin;r switehzidzipled lo lie moved in either dreelion from its oif position andlhereliy to stort snd motor in either direction` :ind hziving,ysitzitonnry und niovnhle eontiiels ndnpt'ed to ronneet vdrious portionsotsziid rt istunee in cirenil with sziid motor, suid eontnets eomprisne; two sets of stntionzirv eonhiets und movuhle eoutnets :n :ine'ed toengl'zige liotli ot sliid .sets when suid switrh is moved in eitherdirection {rom'its oil' position.

in :i rol'nry eonlrollin.: switch ndiipted to he moverl in eitherdiret-tion t'roni its oil position. two sets ol' suhstnn'tinllydinnietriedlly opposite eontncts, :ind eontiiets relatively nioviihlethereto und :uliipied to he engiit'ed izillv :ind nlternulelv hy Suidtwo sets when sziid switch is moved in either direction from itsoilposition.

o: ln :i i'otnrv controlling.; swteh, :i series of eontsiets dividedinto two groups displiieed hv :in :ingle of .suhsliintiulliz 1H()degrees, :i seeond series ot' eontziet's divided into two setssyniinelrienlly disposed with respect to either one oi sziid groups hutnt dltl'erent nnfxliliir distonees t'roin Suid `gro\ips, and menus forrotzilinf; the eonlzu'ts ot' one series relativi-liv to :uid post theeontnets ot, the other series.

T. ln :i roturv eonlrolling switeh, li series ot' eont: :ts divided intotwo groups displaced :it :in :loggie ot' suhslzin` linlly it() degrees,:i second s ies divided into two groupe :irriine'ed spirnlly nhout then. is ot` rotniioii ot the switeii, the spirals being' disposedsvnnneirieiilly with respeet' to either one ot' the groups oi" thet'u'st series hui nt. dit`t`erenl', :ingulzi'r distnnees from suidgroups. und menos for rotzitA in e; the eontnets ot' onel seriesrelatively to :ind post the inutili-ts of the other series.

8. in zi rotary eontrolling`Y switeh, :i eyllnder, two sets otcoiitiiets nrriinfgod in the torni oi' heliees symmetrical1)' disposedon sziid ey nder with :i grenier :ing'nlnr distainee hetween -the endsthereof :it one side ot' the evlinder thon :it the opposite side. twosets ot' contat-ts displaced :it :in :ingle olf suhstnntinlly 180deereerJ :ind :ii-ranged in Operntive relation to the tirst. sets ofeontiiets, :ind menus for producing.;l :i relative. movement lletweenthe eontnets on the eylinder :ind the renininiin: eontnets.

l). In u rotary controlling' swlteh, i revoluhie evlinder, two sets of('oninets nrrnne'ed in the 'l'orm of helices sym n'ietrienllv disposedon Suid evlinder with :i 'rezxter zinJulnrV `distiinee hetween theendstliereot' :il one side of the eylinder thun nt' i'he opposite side,two rows of eonl: ft fingers constructed :ind urrnnged to engage theeonl'ziets on the cylinder :it diiniietrienllv opposite points, :nidmenus i'or rotating' the Cylinder.

10. In n rolury controlling switeh, two similar sets ot revoliihlecontacts :1nd two Similin' sets of tixed eontnets :ind :irrzlneed sothat ezieh set ot' revolulile ,'ug'esi with one set'v ot' lixedironlncts when the 'ed through :i deiinie :ingle in one direction ill:ofi" position :ind with the other set, iiXe-il eonlzirts when the switehis rotated through n ditiereni' d' le in the other direition, und menost'or rotdlin); sind utah. tht` urrzineemoiit heine' sueh thnt en'tuitehunle: :ire etiered l:it onl'v one set oi` tixed rontzivlfts :it :itime 1l. ln roinhinntion with resisninees, :i rotzirv eontrollintrswiteh comprising-two sets ot' revolulile eontziels :ind two sets oftixed eontuets Constructed und :irrnnged so thilt: ent'h ser ofrevoluhle eoulnets engng'es with one set of fixed rontiiets when theswitch is rotated through :t

' detinite :ingle in one direction from lts ofi" iusition :ind

with the other soi ot' iixed eontiicts when the switeh is rotnledthrough u dill'erenr :ingle in the other dirertion, elet-tritatieonneetons between the tired rontnets :ind the reldistnneeif, :indnienns for rotziling, iid swlteh.

in :i roturr eontrolling swteh, :i series ott'ontzieis divided into twoejroups wliir'h nre plzii'ed :it :in :ingle ot` suhstiinlizillf.' lilodegrees, :i second se l; divided into two groups :lrrnntied splrully:ihouz iin: dx s' ot rotzitlon of the ni'iioireollv nith l'viiliin theripii'nis livin" disposi-tl oups` ot' i nrriis 'ont l nien 4.ifi l) pastthe contacts of the other series, the arrangement beto the other seriesin either direction results in bringing lng such that circuit changesare produced alternately contacts together rst on one side of thecylinder und vby the contacts rst on one side of the axis and thenonthen on the other. the other. i In witness whereof I have hereunto setmy hand thisv 5 13. In a rotary controlli g and reversing'swltch, aseriesJ 11th day of Muy, 1904.

v ot contacts divided into two groups displaced by an anglo VPH. ofsubstantially 180 degrees, a second series of contacts HAROLD E' WH 1located in a cylindrical plane and divided into two sets Witnesses: soarranged with reference to the two rst mentioned BENJAMIN B. HULL, 1()groups of contacts that a movement of one series relatively HELENORFORD.

